package com.itheima.reggie.common;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

@Component
@Slf4j
public class MyMetaObjectHandler implements MetaObjectHandler {

    /**
     * 添加数据时, 调用该方法, 对公共字段进行填充
     *
     * @param metaObject
     */
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("公共字段填充[insert...]");
        // strictInsertFill优势在于: 当类中没有该属性时, 就不会给该属性赋值, 也不会出现异常!
        strictInsertFill(metaObject, "createTime", LocalDateTime.class, LocalDateTime.now());
        strictInsertFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now());

        strictInsertFill(metaObject, "createUser", Long.class, BaseContext.getCurrentId());
        strictInsertFill(metaObject, "updateUser", Long.class, BaseContext.getCurrentId());

        //metaObject.setValue("createTime", LocalDateTime.now());
        //metaObject.setValue("updateTime", LocalDateTime.now());
        //metaObject.setValue("createUser", BaseContext.getCurrentId());
        //metaObject.setValue("updateUser", BaseContext.getCurrentId());

    }


    /**
     * 修改数据时, 调用该方法, 对公共字段进行填充
     *
     * @param metaObject
     */
    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("公共字段填充[update...]");
        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("updateUser", BaseContext.getCurrentId());
    }
}
